Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Reexamination Certificate
2006-04-25
2006-04-25
Wood, Elizabeth D. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
C502S020000, C502S208000
Reexamination Certificate
active
07033971
ABSTRACT:
A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke on their surface in a manner that maintains their catalytic activity at a predetermined level.
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Clem Kenneth R.
Coute Nicolas P.
Fung Shun C.
Hall Richard B.
Kochkar Hafedh
ExxonMobil Chemical Patents Inc.
Wood Elizabeth D.
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